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https://github.com/ekeeke/Genesis-Plus-GX.git
synced 2024-09-11 01:03:15 +02:00
added random RAM pattern initialization on Mark-III & Japanese Master System (fixes "Alibaba and 40 Thieves" & "Block Hole")
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@ -38,9 +38,6 @@
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#include "shared.h"
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#include "shared.h"
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#include "terebi_oekaki.h"
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#include "terebi_oekaki.h"
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#ifdef NGC
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#include "cheats.h"
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#endif
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#define MAPPER_NONE (0)
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#define MAPPER_NONE (0)
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#define MAPPER_TEREBI (1)
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#define MAPPER_TEREBI (1)
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@ -52,7 +49,7 @@
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#define MAPPER_93C46 (7)
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#define MAPPER_93C46 (7)
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#define MAPPER_MULTI (8)
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#define MAPPER_MULTI (8)
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#define GAME_DATABASE_CNT (188)
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#define GAME_DATABASE_CNT (190)
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typedef struct
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typedef struct
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{
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{
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@ -133,6 +130,10 @@ static const rominfo_t game_list[GAME_DATABASE_CNT] =
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{0xBD1CC7DF, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_SEGA, SYSTEM_MARKIII, REGION_JAPAN_NTSC}, /* Super Tetris (K) */
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{0xBD1CC7DF, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_SEGA, SYSTEM_MARKIII, REGION_JAPAN_NTSC}, /* Super Tetris (K) */
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{0x6D309AC5, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_SEGA, SYSTEM_MARKIII, REGION_JAPAN_NTSC}, /* Power Boggle Boggle (K) */
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{0x6D309AC5, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_SEGA, SYSTEM_MARKIII, REGION_JAPAN_NTSC}, /* Power Boggle Boggle (K) */
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/* games requiring random RAM pattern initialization */
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{0x08BF3DE3, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_NONE, SYSTEM_MARKIII, REGION_JAPAN_NTSC}, /* Alibaba and 40 Thieves (KR) */
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{0x643B6B76, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_NONE, SYSTEM_MARKIII, REGION_JAPAN_NTSC}, /* Block Hole (KR) */
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/* games requiring PAL timings */
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/* games requiring PAL timings */
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{0x72420F38, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_SEGA, SYSTEM_SMS2, REGION_EUROPE}, /* Addams Familly */
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{0x72420F38, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_SEGA, SYSTEM_SMS2, REGION_EUROPE}, /* Addams Familly */
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{0x2D48C1D3, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_SEGA, SYSTEM_SMS2, REGION_EUROPE}, /* Back to the Future Part III */
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{0x2D48C1D3, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_SEGA, SYSTEM_SMS2, REGION_EUROPE}, /* Back to the Future Part III */
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@ -932,9 +933,9 @@ static void mapper_8k_w(int offset, unsigned int data)
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}
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}
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}
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}
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#ifdef NGC
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#ifdef CHEATS_UPDATE
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/* update ROM patches */
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/* update ROM patches when banking has changed */
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ROMCheatUpdate();
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CHEATS_UPDATE();
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#endif
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#endif
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}
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}
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@ -1076,9 +1077,9 @@ static void mapper_16k_w(int offset, unsigned int data)
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}
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}
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}
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}
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#ifdef NGC
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#ifdef CHEATS_UPDATE
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/* update ROM patches */
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/* update ROM patches when banking has changed */
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ROMCheatUpdate();
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CHEATS_UPDATE();
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#endif
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#endif
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}
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}
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@ -218,7 +218,7 @@ void gen_reset(int hard_reset)
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/* System Reset */
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/* System Reset */
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if (hard_reset)
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if (hard_reset)
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{
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{
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/* clear RAM (TODO: use random bit patterns as on real hardware) */
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/* clear RAM (TODO: use random bit patterns for all systems, like on real hardware) */
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memset(work_ram, 0x00, sizeof (work_ram));
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memset(work_ram, 0x00, sizeof (work_ram));
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memset(zram, 0x00, sizeof (zram));
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memset(zram, 0x00, sizeof (zram));
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}
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}
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@ -286,6 +286,13 @@ void gen_reset(int hard_reset)
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}
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}
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else
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else
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{
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{
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/* RAM state at power-on is undefined on some systems */
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if ((system_hw == SYSTEM_MARKIII) || ((system_hw & SYSTEM_SMS) && (region_code == REGION_JAPAN_NTSC)))
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{
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/* some korean games rely on RAM to be initialized with values different from $00 or $ff */
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memset(work_ram, 0xf0, sizeof(work_ram));
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}
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/* Z80 cycles should be a multiple of 15 to avoid rounding errors */
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/* Z80 cycles should be a multiple of 15 to avoid rounding errors */
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mcycles_z80 = (mcycles_z80 / 15) * 15;
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mcycles_z80 = (mcycles_z80 / 15) * 15;
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